A Unique Cytoplasmic-Nuclear Interaction in Sunflower (Helianthus annuus L.) Causing Reduced-Vigor Plants and the Genetics of Vigor Restoration.

ABSTRACT: Wild Helianthus species are an important genetic resource for sunflower improvement, but sometimes there are adverse interactions between the wild and cultivated sunflowers. This study reports the inheritance of reduced vigor and its restoration resulting from an interaction of perennial Helianthus cytoplasms with nuclear genes of cultivated sunflower lines. The large number of vigor restoration (V) genes identified in cultivated lines are all located at the same locus, designated V₁ , suggesting a common origin of these genes. Additional V genes derived from the wild perennial species H. giganteus L. and H. hirsutus Raf. are located at a different locus than V₁ , designated V₂ . A major differe

SUBMITTER: Liu Z 

PROVIDER: S-EPMC7367100 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature